UnityGame/Library/PackageCache/com.unity.shadergraph/Documentation~/Sub-graph-Asset.md

Subgraph Asset

Description

The Subgraph Asset is a new Asset type introduced with the Shader Graph. A Subgraph Asset defines a Subgraph. This is different to a Shader Graph. You can create a Subgraph Asset from the Project window from the Create menu via Subgraph in the Shader sub-menu.

You can open the Shader Graph Window by double clicking a Subgraph Asset or by clicking Open Shader Editor in the Inspector when the Subgraph Asset is selected.